﻿// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using Antlr.Runtime;
using Antlr.Runtime.Tree;
using ICSharpCode.SharpDevelop;
using Xebic.Parsers.ES3;

namespace ICSharpCode.JavaScriptBinding
{
	public class JavaScriptAstFactory
	{
		string code;
		CommonTokenStream tokenStream;
		ES3Parser.program_return programReturn;
		
		public JavaScriptAstFactory(ITextBuffer textBuffer)
		{
			code = textBuffer.Text;
		}
		
		public JavaScriptAst Create()
		{
			CreateTokenStream();
			var parser = new ES3Parser(tokenStream);
			programReturn = parser.program();
			return new JavaScriptAst(tokenStream, programReturn.Tree as CommonTree);
		}
		
		void CreateTokenStream()
		{
			var stream = new ANTLRStringStream(code);
			var lexer = new ES3Lexer(stream);
			tokenStream = new CommonTokenStream(lexer);
		}
	}
}
